public class Student {
    public int id;
    public Student(){
        id = 1;
    }

    public static void main(String[] args) {
        Student student = new Student();
        System.out.println(student.id);
    }
}
enum Test{
    Instance;
    private Student student;
    Test(){
        student = new Student();
    }
    public Student get(){
        return student;
    }
}
